KD2* installed - quick and smooth
While I had my car at the dealer to fix the passenger-side mirror I had caught on my garage door (luckily it was JUST the cap), they also installed KD2*. It was done in a couple of hours, and I was pleased to find that my digital key still worked (unlike KD2 where I had to reset that) and that most of the personalizations stuck. (I did have to redo the garage door remote, and I think there's something with the HUD I have to reenable.) The new sounds are interesting - I had been given a Q5 as a loaner and it has the same sound.
I was chatting again with the service manager, and she told me two interesting things. First is that Audi is doing a staged rollout of KD2* and that by October everyone should be eligible for it. Then when I mentioned that some people report their dealers are taking days to get it done, she said that the process requires excellent network connectivity of the box used to install the update, and that any network glitch will break the install. She commented that she's having their boxes connected by Ethernet for more reliability, but generally they don't have problems. She also mentioned that Audi is doing something to further speed up the install, and that later in the year it will be down to about 90 minutes.
I still need to test charging, as I've read some people have issues with that.